Valve element structure controlling glue spraying

Abstract

The invention discloses a valve element structure controlling glue spraying. The valve element structure controlling glue spraying comprises a nozzle body and a straight glue spraying slit formed in the top of the nozzle body. The lower end of the straight glue spraying slit is provided with a cylindrical through hole. A rotating shaft type valve element penetrates the cylindrical through hole andis provided with a straight glue passing slit. A glue inlet groove is formed below the middle portion of the cylindrical through hole. The straight glue passing slit is arranged along an axis and deviates from the axle center. The valve element structure controlling glue spraying is used for perfect bond books or photo albums, glue heads and glue tails do not exist, no environmental pollution iscaused, the glue material is saved, and the perfect binding quality is improved.

Description

technical field [0001] The invention relates to glue binding equipment for books and photo albums, in particular to a valve core structure for controlling glue spraying. Background technique [0002] When existing glue binding machines use glue to bind books and photo albums, they all use an open melt tank to melt the glue, and then roll the melted glue from the glue tank to the underside of the page stack, also called the back of the book, through a rubber roller. [0003] This kind of open melt glue tank has the following insurmountable defects: [0004] 1. Because the melt tank is open, the hot melt glue in the melt tank keeps volatilizing, which not only wastes the glue, but also pollutes the working environment; [0005] 2. The hot melt adhesive in the glue tank has repeatedly experienced the process of heating, cooling, and carbonization, and it will always be a recycled glue liquid. If it is used repeatedly, the bonding performance of the hot melt adhesive will be gr...

AI Technical Summary

Problems solved by technology

[0003] This kind of open melt glue tank has the following insurmountable defects:

[0004] 1. Because the melt tank is open, the hot melt glue in the melt tank keeps volatilizing, which not only wastes the glue, but also pollutes the working environment;

[0005] 2. The hot melt adhesive in the glue tank has repeatedly experienced the process of heating, cooling, and carbonization, and it will always be a recycled glue liquid. If it is used repeatedly, the bonding performance of the hot melt adhesive will be greatly reduced;

[0006] 3. Due to the continuous rolling of the rubber roller, while the glue on the surface of the rubber roller adheres to the lower side of the stack, it will also remain glue on the front and rear ends of the stack, forming glue heads and tails, hindering the cover packaging and affecting the flatness

[0007] Utility model patent ZL201120227823.X discloses a "glue binding machine with smoke exhaust device", which reduces pollution in the factory building by installing a smoke exhaust device, but it cannot eradicate environmental pollution, nor can it solve the problem caused by repeated melting of hot melt adhesives. The technical problem of reduced adhesive performance

[0008] Utility model patent ZL200720109861.9 discloses a "glue head and tail removal mechanism for glue machine", which uses a scraper to scrape off the glue on the main rubber wheel to avoid the formation of glue heads and tails, but it cannot solve the problem of hot melt Adhesive performance reduction and environmental pollution caused by repeated melting of glue

[0009] Invention patent ZL201210331536.2 discloses a "Glue Spraying Wireless Glue Binding Machine", which uses a glue tank to replace the existing sol tank. Although it solves the problem of environmental pollution, because the glue spray nozzle uses a traditional on-off valve, the output 1. The time required for glue stopping is not fast enough, and the closing is not tight enough. Glue heads and tails will still be formed at both ends of the stack, which directly affects the quality of glue binding.

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